"Malaria is a stubborn disease, slow to kill, quick
to incapacitate and hard to cure. All through human history, in times of peace
as in times of war, it has taken its steady toll of human life. Against this
persistent affliction, many of the best minds in public health and in medicine
have, during the past few decades, been forging increasingly effective weapons.
Not a year passes without some improvement in techniques or tactics against
what has been termed the greatest single threat to human health" ( R.B.
Fosdick, President of the Rockefeller Foundation, 1946 ).